Technician: Energy in a Magnetic Field

What is the ability to store energy in a magnetic field called? [T5C03]

A. Admittance
B. Capacitance
C. Resistance
D. Inductance

Here we have another example of a “definition” type of question. The answer is D. Inductance. A device that stores a magnetic field is called an inductor. So if you can remember the correlation, it becomes pretty simple.

Just like a device which stores and discharges energy an electric field is called a capacitor, and that ability is called Capacitance.

Admittance is a property of a circuit that describes how easily current will flow in a circuit. The opposite of that is Resistance, which is a property that limits the ability of current to flow in a circuit.